Finding the Fourth Proportional to 858,134.82, 1,287,160.41 and 318,496.14
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Solution
The fourth proportional to 858,134.82, 1,287,160.41 and 318,496.14 is: 477,728.69
Step by Step Solution
- Step 1: Write the proportion equation
858,134.82 : 1,287,160.41 = 318,496.14 : x - Step 2: Convert to fraction form
858,134.82/1,287,160.41 = 318,496.14/x - Step 3: Cross multiply
858,134.82x = 1,287,160.41 × 318,496.14 - Step 4: Simplify right side
858,134.82x = 409,955,622,145.82 - Step 5: Solve for x
x = 409,955,622,145.82/858,134.82 - Step 6: Final answer
x = 477,728.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.